4 On 7 March 1977, the Independent member for Mackay, Ed Casey, who had won twice as an independent after losing Labor preselection ahead of the 1972 election, was readmitted to the Labor Party.
5 On 12 May 1977, the Liberal member for Clayfield, Ivan Brown, died. No by-election was held due to the proximity of the 1977 state election. The Clayfield electorate was abolished at the election as a result of an electoral redistribution.